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1.05ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1519052866

Certificate GIA 1519052866

Diamond specifications and retailer prices

From £2,207 GBP
As of November 6, 2026
Save £2,375 GBP (52%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,582 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1519052866. Listed at 18 retailers as of November 5, 2026, with prices from £2,207 to £4,582, a £2,375 spread on the same certified stone. Diamond Quarter lists it at £4,582. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.05
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1519052866
Dimensions6.52 × 6.49 × 4.04 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
6.52 mm6.49 mm1.05 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519052866
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,380 GBP|Low: £2,244 GBP|High: £4,209 GBP|Avg: £2,783 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£2,244 GBP
Retailer 8£2,295 GBP
Retailer 1£2,380 GBP
Retailer 2£2,557 GBP
Retailer 9£2,656 GBP
Retailer 4£2,887 GBP
Retailer 3£2,889 GBP
Retailer 5£3,035 GBP
Retailer 6£4,147 GBP

34 data points across 9 retailers

18 retailers£2,207 GBP to £4,582 GBP

B+
Cheapest Retailer
-
£2,207 GBP
B+
Retailer 2
-
£2,244 GBP
View
B+
Retailer 3
-
£2,295 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,380 GBP
View
B+
Retailer 5
-
£2,404 GBP
View
Retailer 6
-
£2,487 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,487 GBP
View
B+
Retailer 8
-
£2,557 GBP
View
B+
Retailer 9
-
£2,583 GBP
View
Retailer 10
-
£2,656 GBP
View
Price last confirmed 30 days ago
B+
Retailer 11
-
£2,748 GBP
View
B
Retailer 12
-
£2,869 GBP
View
B+
Retailer 13
-
£2,887 GBP
View
B+
Retailer 14
-
£2,889 GBP
View
B
Retailer 15
-
£3,035 GBP
View
B
Retailer 16
-
£4,147 GBP
View
B
Retailer 17
-
£4,332 GBP
View
Most Expensive
B
Diamond Quarter
1.05SI1H1566220DN · Nov 5
£4,582 GBP
View
17 more retailers have this diamond
Prices start from £2,207 GBPSave up to £2,375 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.05ct Round
£2,207 GBP